The transit system's lawyers called the ad's message "fighting words in the context of current events" and said the FBI was investigating a promise of violence if the ads ran in Washington. Still, the violence that roiled the region has largely abated since then, and there have been few reports of mischievous or hostile reactions to the ads since they appeared in New York.
The New York ads went up in 10 stations across Manhattan on Sept. 24. Since then, an Egyptian-born U.S. columnist was arrested for spray-painting the ad, though two religious groups say that, starting Monday, they'll hang ads urging tolerance alongside the anti-jihad ones. The ads also appeared recently on city buses in San Francisco, where some have been defaced or have had words removed.
The ads won't be particularly visible in the Metro system. One ad will appear in each of four Metro stations for one month, said Metro spokesman Dan Stessel.